How to set up a router guest network? Guests stop reporting their mainline passwords when connecting WiFi, and conveniently manage their children's internet time

last month, I wrote an article about checking for internet access. Several people asked in the comments: 'You have to give WiFi when guests come to your home, right? If you give out the password, won't it leak again?' and asked for answers. In my article about the 'three-layer protection,' there was actually a loophole left unexplored—the visitor network. This time, I'm making up for it, and by the way, how I managed to manage my child's tablet time along with it. One set of setups solves both problems.

first talk about my family: guests come about once or twice a month, mostly relatives bringing their children. My usual approach was to give my password, but when I saw an unfamiliar phone in the device list, I realized that once you give a password, you can't take it back. A relative's child came over, connected my tablet to my WiFi, downloaded a bunch of games, and when I left, the device was still lying in the list—as long as he lived nearby, he could connect anytime. If you want to know if anyone at home has been scammed, you can check out my previous article on Anti-Scraper Investigation This article is about how to 'prevent' after getting ripped.

to clarify: the visitor network isn't just an extra WiFi line, it's a circle

Guest Network (some brands call it Guest WiFi) means you have a separate WiFi name on your router, separated from the main network. To what extent is isolation? I tested it: after the guest's phone connects to the guest network, opening 192.168.1.1 doesn't open my router's backend, my computer's shared folders can't be seen, and casting my phone to my TV is even more impossible. The only thing he could do was go online.

this 'circle' is its value. You never need to report the mainnet password; when guests leave, just turn off the visitor network or set an expiration date to automatically invalidate it—clean and clean. My current approach is to keep the visitor network on year-round but with speed limits. Whoever comes can be instantly identified, no need to report passwords one by one.

one thing to remind us: guest network and mainnet are two different names, but they use the same router . So 2.4G and 5G each have an extra name (for example, if your home is called MyHome, the guest will be called MyHome-Guest). Don't complain about the chaos—this is normal. Some routers can also set whether guest networks are "mutually isolated"—that is, whether guest A and guest B can visit each other. I usually turn it off too, so it's unnecessary.

Getting started: I'll list all the entry points for each brand

settings entry is easier to find than you think; it's all within the router's management page. I checked all the routers at home and among my friends and listed them in a table:

, focus on three things: speed limit, duration or timer , and whether you allow access to the local area network ( must be selected). I set the speed limit to 50Mbps for both upload and download speeds—enough for video streaming, but forget about downloading large files. The guest experience is good, and my home network is unaffected. For the duration bar, if you're a short-term guest, I set it to automatically disable within 4 hours. If it's a holiday when relatives stay for a few days, set it to shut down in sync with the main network.

Xiaomi has a detail worth mentioning: in the Mijia app, you can open the visitor network and generate a QR code WeChat with one click. Customers can scan the QR code without entering the password. Now when someone comes to my family, they print and stick the QR code in the living room, which is much more respectable than giving a password.

kids playing on tablets isn't enough? Parents can control the lock time

visitor network controls guests, children's matters need another function: parental control (some call it children's internet access, green internet access, parent-child protection). My son is in third grade. The tablet was a birthday gift from his grandmother. At first, he didn't pay attention to it. During holidays, he could play for six or seven hours a day and couldn't even hear when he called for food. I've tried hiding the tablet and changing the WiFi password, but none of them solved the root problem—the network they wanted was exactly that.

parental control is simple: the router recognizes each device (by MAC address), you "circle" the child's tablet inside, and set the rules. There are generally three types of rules for what can be set:

• internet : For example, from Monday to Friday you can access the internet from 18:00 to 20:00, and on weekends you can add one hour in the morning, which automatically cuts off on time
• website/app restrictions Gaming and live streaming apps are directly blocked, or only whitelisted are allowed
• device-level offline : One click to kick a device off the line, more elegant than power supply

entrance is adjacent to the visitor network. Xiaomi in the Mi Home app → router → toolbox → child internet protection; TP-Link is in the home care function of the mobile app; ASUS has advanced settings → Parental Controls, which can schedule schedules by device. Green allows internet access, gray disconnects, and you just tap each slot one by one. I set my son's tablet to weekdays from 18:00 to 20:00, and weekends for two hours a day, with all gaming platforms blocked. He had a scene with me the first two days, but by the third day I was used to it—the rules are there, more effective than adults shouting at the top of their lungs.

here's a pitfall: don't expect parents to control and guard against of children above middle school. If it knows how to use data or resets the router, this layer will be broken. Parental control for routers is more than enough to deal with elementary school students, but for older kids, communication is needed—tools are just support. Also, some cheap routers have delays when disconnected. My old TP-LINK device was set to disconnect at 20:00, but it really disconnected at 20:03. My child has learned to lag at this time difference.

visitor network as an "isolation ward": smart devices can also fit in

This is a common usage I've been using for a year. There are more and more smart devices at home—cameras, robot vacuums, smart speakers. All these things need to be connected to the internet, but whether their manufacturers might secretly transmit data or get hacked, you can't control it. My approach is to connect all these to the guest network (or a separate IoT network), separating them from the computer or NAS where the photo files are stored. Even if the camera is hacked, hackers can only see the cluster of smart devices in the visitor network, and can't access my data.

specific operation is to keep the visitor's network on (no time limit, only speed limit), and when using smart devices, just add the visitor's name. Routers supporting multiple guest networks (such as ASUS or ZTE Xuntian) can even set up a dedicated IoT network for more thorough isolation. This idea is called VLAN isolation in enterprises. Home routers simplify it into switches, so you don't need it for free.

my complete setup, just copy the homework

list the current configurations of my router directly; you can follow the setup as needed:

recommended sequence: first enable the guest network (five minutes), then move the smart devices at home one by one (half an hour, each need to be reconnected one by one), and finally set up parental control (ten minutes). Moving smart devices is the most troublesome step—the robot vacuum needs to be reset, the camera needs to scan a code, so be mentally prepared. But after finishing, you'll find the router's background is cleaner, and the device list lets you instantly distinguish "who's family, who's the guest, who's the appliance." The backend password itself needs to be strong enough. If you forgot how to change it, check WiFi retrieve the password article, the same idea. A reminder at the end of

: Password for guest networks should also be set; don't set passwordless ones. I've seen people open password-free visitor networks for convenience, which basically opens a door for the whole building—those freeloading won't even need to ask for passwords. If Xiaomi users can't find the entry point for parental control, first check if the router's firmware is too old. The upgrade entry is in the system settings at 192.168.31.1. I mentioned this backend in the Xiaomi Scheduled Reboot before.